Publication

Here you can find scientific publications of Know-Center employees

The Social Semantic Server: A Flexible Framework to Support Informal Learning at the Workplace

S Dennerlein, D Kowald, E Lex, D Theiler, E Lacic, T Ley, V Tomberg, A Ruiz-Calleja – …, 2015 – In Proceeding of 15th International Conference …

Informal learning at the workplace includes a multitude of processes. Respective activities can be categorized into multiple perspectives on informal learning, such as reflection, sensemaking, help seeking and maturing of collective knowledge. Each perspective raises requirements with respect to the technical support, this is why an integrated solution relying on…

Smart Booking Without Looking: Providing Hotel Recommendations in the TripRebel Portal

M Traub, D Kowald, E Lacic, P Schoen, G Supp, E Lex – In Proceeding of 15th International Conference on Knowledge Techno…, 2015

In this paper, we present a scalable hotel recommender system for TripRebel, a new online booking portal. On the basis of the opensource enterprise search platform Apache Solr, we developed a system architecture with Web-based services to interact with indexed data at large scale as well as to provide hotel…

Using the Hybrid Social Learning Network to Explore Concepts, Practices, Designs and Smart Services for Networked Profes…

J Cook, T Ley, R Maier, Y Mor, P Santos, E Lex, S Dennerlein, C Trattner, D Holley – Proceedings of the International Co…, 2015

Supporting learning analytics for informal workplace learning with a social semantic infrastructure.

A Ruiz-Calleja, S Dennerlein, V Tomberg, K Pata, T Ley, D Theiler, E Lex – In Proceedings of the European Conference on …, 2015

KnowBrain: An Online Social Knowledge Repository for Informal Workplace Learning

S Dennerlein, D Theiler, P Marton, P Santos, J Cook, S Lindstaedt, E Lex – In Proceedings of the European Conference on…, 2015

Evaluating Tag Recommender Algorithms in Real-World Folksonomies: A Comparative Study

D Kowald, E Lex – ACM, 2015 – 9th ACM Conference on Recommender Systems

To date, the evaluation of tag recommender algorithms has mostly been conducted in limited ways, including p-core pruned datasets, a small set of compared algorithms and solely based on recommender accuracy. In this study, we use an open-source evaluation framework to compare a rich set of state-of-the-art algorithms in six…

Tackling Cold-Start Users in Recommender Systems with Indoor Positioning Systems

E Lacic, D Kowald, M Traub, G Luzhnica, J Simon, E Lex – ACM, 2015 – 9th ACM Conference on Recommender Systems

In this paper, we present work-in-progress on a recommender system based on Collaborative Filtering that exploits location information gathered by indoor positioning systems. This approach allows us to provide recommendations for "extreme" cold-start users with absolutely no item interaction data available, where methods based on Matrix Factorization would not work.…

ScaR: Towards a Real-Time Recommender Framework Following the Microservices Architecture

E Lacic, D Kowald, M Traub, E Lex – ACM, 2015 – 9th ACM Conference on Recommender Systems

Various recommender frameworks have been proposed, but still there is a lack of work that addresses important aspects like: immediately considering streaming data within the recommendation process; scalability of the recommender system; real-time recommendation based on different context dependent data. To bridge these gaps, we contribute with a novel recommender…

Research Data Explored II: the Anatomy and Reception of figshare

P Kraker, E Lex, J Goarriz, C Gumpenberger, I Peters – Proceedings of the 20th International Conference on Science and T…, 2015

HowTo: Scientific Work in Interdisciplinary and Distributed Teams

E Lex, S Dennerlein – STCSN E-Letter on Science 2.0, 2015

Research Data Explored: Citations versus Altmetrics

I Peters, P Kraker, E Lex, C Gumpenberger, J Goarriz – 15th International Conference on Scientometrics and Informetrics, 2015

The study explores the citedness of research data, its distribution over time and how it is related to the availability of a DOI (Digital Object Identifier) in Thomson Reuters' DCI (Data Citation Index). We investigate if cited research data "impact" the (social) web, reflected by altmetrics scores, and if there…

A Critical Look at the ResearchGate Score as a Measure of Scientific Reputation

P Kraker, E Lex – Quantifying and Analysing Scholarly Communication on the Web (ASCW’15 at ACM Web Science), 2015

Exploring Coverage and Distribution of Identifiers on the Scholarly Web

P Kraker, A Enkhbayar, E Lex – Proceedings of the 14th International Symposium of Information Science - ISI 2015, 2015

Attention Please! A Hybrid Resource Recommender Mimicking Attention-Interpretation Dynamics

P Seitlinger, D Kowald, S Kopeinik, I Hasani-Mavriqi, T Ley, E Lex – In 24rd International World Wide Web Conference (WW…, 2015

What Really Works: Reflections on Applied Methods in a Real World Interdisciplinary Project

E Lex, P Kraker, S Dennerlein – Proceedings of the Interdisciplinary Coups to Calamities Workshop at ACM Web Science 201…, 2014

Today's data driven world requires interdisciplinary, team-oriented approaches: experts from di fferent disciplines are needed to collaboratively solve complex real-world problems. Interdisciplinary teams face a set of challenges that are not necessarily encountered by unidisciplinary teams, such as organisational culture, mental and nancial barriers. We share our experiences with interdisciplinary teamwork…

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